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MediumSigmaHQFlorian Roth (Nextron Systems)

Network Communication Initiated To Portmap.IO Domain

Detects an executable accessing the portmap.io domain, which could be a sign of forbidden C2 traffic or data exfiltration by malicious actors

Detection logic

Detection requirements

Platform
ESXiLinuxmacOSNetwork DevicesWindows

The rule states no platform. This is derived from the 2 ATT&CK techniques it maps to.

Log source product
windows
Log source category
network_connection

Known benign triggers

  • Legitimate use of portmap.io domains

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